Heavy-duty, hard-shell composite cap which is truly non-slip on any surface * The Gel cores and the unique caps then work together to produce the best possible knee zone protection * Perforated breathable neoprene coated with silicon at the tops of the pads hug the leg above the knee. * 1000 denier nylon Cordura braces and protects the rest of the knee area. * Lined and protected with AEGIS Microbe Shield to controls bacteria that cause odor, staining, etc.